Dear Mr Dave/Richard,
I am using CAESAR II 2018 version.
In NEMA input data,when i am inputting 42 " and higher size nozzles then in equipment report Nominal dia is not same as I inputted and as a result Equivalent Dia is also coming wrong.
For Ex. For 42" equipment report shows 38"
For 48" equipment report shows 40"

As a result NEMA report is not proper.

Please have a look into the matter.

Any comments from experts?

This was an error in the interface (the drop list). This has been fixed in Version 11 (2019).